修改PHP函数以在操作后重定向

Question

I'd like the following PHP code to redirect to a specified page after completion of the function. I tried a few different methods but it doesn't ever seem to do anything. The current action that this is taking is that after the button to call the function is pressed, it redirects to an empty page. Any help would be much appreciated.

    function quote_upvote_button($quoteid, $canvote, $ajaxy=FALSE)
    {
        $s = ' class="quote_plus" id="quote_plus_'.$quoteid.'"';
        if (!$canvote) {
            $url = '<a href="?'.urlargs('vote',$quoteid,'plus').'" '.$s.' title="'.lang('upvote').'">+</a>';
                if ($ajaxy) {
                    return '<script type="text/javascript">document.write(\'<a href="javascript:ajax_vote('.$quoteid.',1);" '.$s.' title="'.lang('upvote').'">+</a>\');
                    </script><noscript>'.$url.'</noscript>';
        }
        return $url;
    }
    return '<span '.$s.' title="'.lang('cannot_vote_'.$canvote).'">+</span>';
}

Answer 1

This will work, $your_redirect_url is the location it will go to. It can either be in relative (/foo/bar) or fully qualified ( http://foo.com/bar ) formats. You can read more on PHP Header Redirects here. Please be aware that Miinimals answer requires an additional PECL library to execute, where this is an ingrain function.

function quote_upvote_button($quoteid, $canvote, $ajaxy = false, $your_redirect_url = '/')
{
    $s = ' class="quote_plus" id="quote_plus_'.$quoteid.'"';
    if (!$canvote) {
        $url = '<a href="?'.urlargs('vote',$quoteid,'plus').'" '.$s.' title="'.lang('upvote').'">+</a>';
        if ($ajaxy) 
        {
            // Redirect to your location, and terminate...
            // Will redirect to root on default, or can be overridden/modified as an arg
            header("Location: $your_redirect_url");
            exit;
        }
        return $url;
    }
    return '<span '.$s.' title="'.lang('cannot_vote_'.$canvote).'">+</span>';
}

Answer 2

You should use the http_redirect documented here:

http://php.net/manual/en/function.http-redirect.php

The redirect should go before the return statement.

Answer 3

You first find the url then redirect to that url by

   header('location:'.$url);

or in js u can use

   window.location.assign($url)
   window.location="http://www.newlocation.com";